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← ScienceWhich consequence results when injecting dye to visually observe laminar flow transitions at higher Reynolds numbers?
A)Underestimated critical transition velocity
B)Overestimated inlet development length
C)Premature turbulent flow observation✓
D)Reduced coefficient of entry length
💡 Explanation
Premature turbulence occurs because injecting dye introduces disturbances. These amplify via Kelvin-Helmholtz instability, causing the transition to turbulence to occur at lower Reynolds numbers rather than what would happen without disturbance; therefore we observe turbulence earlier.
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